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Opti-Brite Low Profile LED Trailer Dome Light - 160 Lumens - Rectangle - Clear Lens

Opti-Brite Low Profile LED Trailer Dome Light - 160 Lumens - Rectangle - Clear Lens

Item # ILL33CB
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Optronics Interior Lights - ILL33CB
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5-1/8" x 2-1/4". Waterproof, LED dome light provides bright white light for an interior area. Durable polycarbonate housing and lens. Surface mount - hardware not included. 2-Wire design. 10 Diodes. Lowest Prices for the best trailer lights from Optronics. Opti-Brite Low Profile LED Trailer Dome Light - 160 Lumens - Rectangle - Clear Lens part number ILL33CB can be ordered online at etrailer.com or call 800-298-1624 for expert service.
  • All Info
  • Reviews (7)
  • Q & A (6)
  • Photos
  • Why etrailer?

Optronics Trailer Lights - ILL33CB

  • Interior Lights
  • Rectangle
  • LED Light
  • White
  • 5L x 2W Inch
  • Surface Mount
  • Optronics

5-1/8" x 2-1/4". Waterproof, LED dome light provides bright white light for an interior area. Durable polycarbonate housing and lens. Surface mount - hardware not included. 2-Wire design. 10 Diodes.


  • Low-profile, rectangular dome light provides bright white light for your trailer's interior
  • LEDs make great replacements for incandescent lights
    • Last 50 times longer
    • More efficient - provide brighter light with less power output
    • No bulbs to replace - no brittle filaments
  • Sealed, waterproof construction
  • Durable polycarbonate housing and lens
  • Clear lens over white LEDs
  • Compatible with 12V DC systems
  • Surface mount - hardware not included
  • 2-Wire pigtail - includes power lead and ground wire


  • Dimensions: 5-1/8" long x 2-1/4" wide x 3/4" thick
  • Light output:
    • Effective lumen output: 160 lumens
    • Raw lumen output: 210
  • Diodes: 10
  • Power draw at 12.8V: 0.147 amps
  • Lifetime warranty on LEDs

Optronics ILL33 Opti-Brite LED Dome Light Dimensions

Raw Lumens vs. Effective Lumens

Lumens are used to measure the amount of usable light that is put out by a light source. Raw lumens represent the number of lumens that the manufacturer claims the LEDs are capable of producing. It does not include the light's drive method or the amount of light lost from the lens or reflector. Effective lumens take these factors into account and represent the number of lumens that are actually produced by the complete light assembly, not just the amount of light that the diodes are capable of producing. This light has a 210 raw lumen capacity and produces 160 effective lumens.

ILL33CB Optronics Opti-Brite Low Profile LED Trailer Dome Light - 160 Lumens - 10 Diodes - Rectangle - Clear Lens

California residents: click here

Customer Reviews

Opti-Brite Low Profile LED Trailer Dome Light - 160 Lumens - Rectangle - Clear Lens - ILL33CB

Average Customer Rating:  4.9 out of 5 stars   (7 Customer Reviews)

5-1/8" x 2-1/4". Waterproof, LED dome light provides bright white light for an interior area. Durable polycarbonate housing and lens. Surface mount - hardware not included. 2-Wire design. 10 Diodes.


I replaced the courtesy lights in the door panels of my 18wheeler with these and now have NO EXCUSE for missing the steps when I get in or out. I still can not believe how bright these are and have just got two more to place in the storage compartments under the sleeper. Weather tight, easy four point mounting holes and will never burn a lamp cover again. Thanks.


These things will give ya a Suntan.... They are extremely bright and I have put them in the storage boxes and entry doors on my 18 wheeler. When the door is opened you can do Brain Surgery in the dark of night. Everyone who sees these comment on how bright they are and ask where to get some. The best thing is they generate NO HEAT and ARE BRIGHTER then the halogen units, I replaced, that had melted their lenses. I now buy ALL MY LIGHT NEEDS FROM eTRAILER.......!



I installed this LED lights in my enclosed dog trailer and are working great. Excellent service from etrailer.com Thank you


they look great.


LED lights, quick delivery, products were good and as advertised.


Great Product fast shipping will by aga in


Ask the Experts about this Optronics Trailer Lights

  • Recommended Interior Lights for Livestock Trailer
    I recommend using an LED interior light like the Optronics LED Interior Light 10-Diode, Surface Mount, Clear Lens # ILL33CB. The LED light will last much longer, provide more light output, and pull less amps than an incandescent bulb. This light measures 5-1/8 inches by 2-1/4 inches. I have attached a review video of this light for you. The video will help give you an example of what the light will look light when it is on. The # ILL33CB light has a 2-wire hook-up and will require...
    view full answer...
  • Dimensions of Optronics LED Interior Light # ILL33CB
    For LED Interior Light # ILL33CB the overall dimensions are 5-1/8 inches long, 2-1/4 inches tall, and 3/4 inches deep. The mounting holes are 4-3/4 inches apart on center side to side and 1-13/16 inches apart on center top to bottom.
    view full answer...
    Image 1 for
  • What is the Power Draw for Optronics LED Interior Light # ILL33CB
    The Optronics LED Interior Light # ILL33CB draws all of 0.147 amps at 12.8 volts. So that is very little power. Even with 3 of them total you are still well under 1 amp of power.
    view full answer...
  • What is the lumen Output for Optronics LED Opti-Brite Dome Light # ILL33CB
    For LED Opti-Brite dome light # ILL33CB there are 2 lumen ratings. One is the raw lumen output which is the rating in perfect conditions. For this light the raw lumen output is 210 lumen. The effective lumen output is the average condition rating; so what you can count on this light producing. The effective lumen output for this light is 160 lumen.
    view full answer...
  • Recommended Interior Light and Switch for Snowmobile Trailer
    I recommend using the # ILL33CB, which can be mounted on the ceiling and are small enough at 5" long x 2" wide that mounting shouldn't be an issue with a roof that has a slight pitch/curve. These are surface mounting lights, that are 160 lumens and require 4 screws to mount. I think the ceiling mounted lights provide you with a bit better overall illumination which is why I would prefer them to the # ILL72CB you were looking at, which would need to be mounted on the walls most likely. I'll...
    view full answer...
  • LED Lights to Be Used for Cargo Area of Work Truck
    What you are looking to do is very possible, you just need to pick out the LED lights that you want to use and go from there. If you want something that has a switch mounted to it the part # RVILL34 would be a great option. Or if you want to use the lights you already have the # ILL33CB would work well for that. To trickle charge a battery mounted in the truck for the lights you could easily run some 10 gauge wire like part # 10-1-1 to the positive post from the positive post of the vehicle.
    view full answer...

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Info for this part was:

Employee DeAnne T
Written by:
DeAnne T
Employee Michael H
Expert Research:
Michael H
Employee Sarah W
Updated by:
Sarah W
Employee Brian T
Updated by:
Brian T

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